On Christmas, I woke up having a killer spasm in the area of my diaphragm that appeared to pull on all the muscles in my upper back. I took an Aleve and it felt better in 30 minutes.
Two weeks later, I woke up with the same symptoms. I took ibuprofen and felt better in 45 minutes.
Yesterday, I had another attack and followed the same protocol. I had thought maybe I was breathing wrong while I was running so the last two weeks had been all about focusing on breathing when running. The other similarity was that I had the attacks on days where I was resting from exercise -- until today.
I had another attack after I ate lunch today, so I called the doctor and went in. Tomorrow, I have an ultrasound and some blood work scheduled. It appears as if I have a gall bladder issue.